CN210937211U - Large-scale hydraulic internal tensioning type clamp - Google Patents
Large-scale hydraulic internal tensioning type clamp Download PDFInfo
- Publication number
- CN210937211U CN210937211U CN201922065574.8U CN201922065574U CN210937211U CN 210937211 U CN210937211 U CN 210937211U CN 201922065574 U CN201922065574 U CN 201922065574U CN 210937211 U CN210937211 U CN 210937211U
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- oil duct
- piston
- clamp
- anchor clamps
- piston cavity
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Abstract
The utility model provides a tight type anchor clamps rise in large-scale hydraulic pressure, it includes the anchor clamps base, the top fixed mounting of anchor clamps base has the anchor clamps body, the step supports in the specific top of anchor clamps and installs elasticity thin wall cover, the annular oil duct that is the annular and arranges is processed on the step in the top and with the middle part that elasticity thin wall cover contacted, annular oil duct is linked together with the vertical oil duct of processing on the anchor clamps body, the bottom of vertical oil duct is linked together through horizontal oil duct and piston cavity, the piston is installed through sliding fit in piston cavity's inside, the top of piston cooperatees with being used for driving it along the gliding power device of piston cavity. The clamp adopts circumferential stress clamping, has reasonable clamping force on large-scale precise thin-wall disc parts, and overcomes the deformation caused by uneven stress clamping of the thin-wall parts.
Description
Technical Field
The utility model relates to an anchor clamps field, concretely relates to tight type anchor clamps rise in large-scale hydraulic pressure.
Background
In the process of carrying out high-precision machining on a thin-walled workpiece by adopting the existing three-jaw chuck type clamp, in order to ensure the machining precision and the repeated positioning precision of the thin-walled workpiece, the thin-walled workpiece needs to be repeatedly adjusted and the installation position needs to be corrected in the clamping process, so that time and labor are wasted; in addition, the problem of uneven clamping force exists in the process of clamping a workpiece by adopting the existing clamping jaw type clamp, so that the thin-wall part is deformed due to uneven stress clamping.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main objective is to solve not enough that above-mentioned background art exists, designs a tight type anchor clamps rises in large-scale hydraulic pressure, and this anchor clamps adopt the circumference atress to press from both sides tightly, and is reasonable to the clamp force of large-scale accurate thin wall dish part, overcomes thin wall spare atress and steps up inhomogeneous and the deformation that arouses.
In order to realize the technical characteristics, the purpose of the utility model is realized as follows: the utility model provides a tight type anchor clamps rise in large-scale hydraulic pressure, it includes the anchor clamps base, the top fixed mounting of anchor clamps base has the anchor clamps body, the step supports installs elasticity thin wall cover in the specific top of anchor clamps, the middle part that contacts with elasticity thin wall cover on the step in the top has processed the annular oil duct that is the annular and arranges, annular oil duct is linked together with the vertical oil duct of processing on the anchor clamps body, the bottom of vertical oil duct is linked together through horizontal oil duct and piston cavity, the piston is installed through sliding fit in the inside of piston cavity, the top of piston cooperatees with the power device who is used for driving it to slide along piston cavity.
A plurality of bolt mounting grooves are uniformly formed in the outer edge of the bottom plate of the clamp base.
The fixture body is fixedly connected with the fixture base through a plurality of uniformly distributed long bolts.
The elastic thin-wall sleeve is in interference fit with the inner step at the top of the clamp body, and a first sealing ring and a second sealing ring are installed at the upper end and the lower end of the annular oil duct in a matched mode.
The elastic thin-wall sleeve is in clearance fit with a workpiece to be clamped in a normal state; the elastic thin-wall sleeve can elastically deform under the action of hydraulic oil and clamp a workpiece to be clamped inside the elastic thin-wall sleeve.
And the top of the vertical oil duct is provided with a plugging column.
The power device comprises a threaded hole machined in the top of the piston cavity, a threaded column is matched with the inside of the threaded hole in a threaded transmission mode, and the bottom end face of the threaded column is in contact fit with the top end of the piston and pushes the piston to slide along the piston cavity.
And a sealing gasket is arranged at the bottom of the transverse oil duct.
The utility model discloses there is following beneficial effect:
anchor clamps, be used in high accuracy requirement's thin wall work piece, overcome thin wall part and receive the clamp force inhomogeneous and warp. In the specific use process, a point of pressure is applied to the piston, and the elastic thin-wall sleeve is uniformly and elastically deformed outwards on the whole cylindrical surface, so that the circumference of the elastic thin-wall sleeve is stressed and tightened; and the machined part is detected to be consistent with the cylindricity before machining and almost not deformed, and the repeated point position precision of repeatedly clamping the workpiece is within 0.002 mm.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a main sectional view of the present invention.
Fig. 2 is a top view of the present invention.
In the figure: the device comprises a bolt mounting groove 1, a clamp base 2, a sealing gasket 3, a transverse oil duct 4, a piston cavity 5, a long bolt 6, a vertical oil duct 7, a piston 8, a threaded hole 9, a threaded column 10, an annular oil duct 11, an elastic thin-wall sleeve 12, a workpiece to be clamped 13, a second sealing ring 14, a first sealing ring 15, a first surface to be machined 16, a second surface to be machined 17, a clamp body 18 and a blocking column 19.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
Referring to fig. 1-2, the large hydraulic internal tensioning type clamp comprises a clamp base 2, a clamp body 18 is fixedly mounted at the top of the clamp base 2, an elastic thin-wall sleeve 12 is supported and mounted on an inner step at the top of the clamp body 18, an annular oil duct 11 which is annularly arranged is processed in the middle of the inner step at the top and is in contact with the elastic thin-wall sleeve 12, the annular oil duct 11 is communicated with a vertical oil duct 7 which is processed on the clamp body 18, the bottom end of the vertical oil duct 7 is communicated with a piston cavity 5 through a transverse oil duct 4, a piston 8 is mounted in the piston cavity 5 through sliding fit, and the top of the piston 8 is matched with a power device which is used for driving the piston to slide along the piston cavity 5. The internal expansion type clamp with the structure is used for clamping large-scale precise thin-wall disc parts, and the clamping reliability is greatly improved due to the adoption of a circumferential stress clamping mode, so that the deformation caused by uneven stress clamping of the thin-wall parts is overcome. And the clamping operation process is simple, the use is convenient, and the repeated positioning precision of secondary clamping is ensured.
Further, a plurality of bolt mounting grooves 1 are uniformly formed in the outer edge of the bottom plate of the clamp base 2. The bolt installation groove 1 can be used for fixedly installing the clamp base 2.
Further, the clamp body 18 is fixedly connected with the clamp base 2 through a plurality of uniformly distributed long bolts 6.
Further, the elastic thin-wall sleeve 12 is in interference fit with an inner step at the top of the fixture body, and a first sealing ring 15 and a second sealing ring 14 are installed at the upper end and the lower end of the annular oil duct 11 in a matching manner. The annular oil duct 11 is effectively sealed through the cooperation, and the problem of oil leakage is solved.
Further, the elastic thin-wall sleeve 12 is in clearance fit with the workpiece 13 to be clamped in a normal state; the elastic thin-wall sleeve 12 can elastically deform under the action of hydraulic oil and clamp the workpiece 13 to be clamped inside the elastic thin-wall sleeve. Through the matching relation, the elastic thin-wall sleeve 12 can be ensured to clamp the workpiece 13 to be clamped in the elastic thin-wall sleeve in an annular holding manner, so that the clamping reliability is ensured, and meanwhile, the deformation caused by uneven stress of the workpiece 13 to be clamped is avoided.
Further, a plugging column 19 is mounted at the top of the vertical oil passage 7. The plugging columns 19 can be used to effectively plug the vertical oil gallery 7.
Further, the power device comprises a threaded hole 9 machined in the top of the piston cavity 5, a threaded column 10 is matched in the threaded hole 9 in a threaded transmission mode, and the bottom end face of the threaded column 10 is in contact fit with the top end of the piston 8 and pushes the piston to slide along the piston cavity 5. The power device can be used for providing hydraulic power and further used for tensioning the elastic thin-wall sleeve 12 for clamping a workpiece. In the specific clamping process, when clamping is needed, the threaded column 10 is rotated to form threaded transmission fit with the threaded hole 9, the piston 8 at the bottom end of the threaded column 10 is driven to slide along the piston cavity 5 through the threaded column 10, pressure is provided for internal oil, the oil enters the annular oil passage 11 through the transverse oil passage 4 and the vertical oil passage 7, and the elastic thin-wall sleeve 12 inside the annular oil passage 11 is tensioned to generate annular deformation to clamp the workpiece 13 to be clamped.
Further, the bottom of the transverse oil passage 4 is provided with a sealing gasket 3. The bottom of the piston cavity 5 and the bottom of the vertical oil duct 7 can be plugged through the sealing gasket 3, so that the problem of leakage of oil under the thrust action is solved, and a good sealing effect is achieved.
The utility model discloses a working process and principle do:
the outer diameter of the elastic thin-wall sleeve 12 is in interference fit with the clamp body, the inner hole of the elastic thin-wall sleeve is in small clearance fit with a workpiece, a set of piston mechanism and a set of hydraulic oil duct are designed at the position, close to the edge, of the clamp body and parallel to the center line of the clamp body, when the workpiece needs to be tightened, the threaded column 10 is rotated rightwards, the threaded column 10 and the threaded hole 9 form threaded transmission fit, the piston 8 at the bottom end of the threaded column 10 is driven to slide along the piston cavity 5 through the threaded column 10, pressure is provided for internal oil, the oil enters the annular oil duct 11 through the transverse oil duct 4 and the vertical oil duct 7, the elastic thin-wall sleeve 12 inside the annular oil duct 11 is tightened, and annular deformation is generated to clamp the workpiece 13 to be clamped. The stability and firmness of the workpiece in the cutting and grinding process are ensured. After the machining, the workpiece needs to be dismounted, the threaded column 10 is only rotated leftwards, the piston is pressed backwards by pressure, the elastic thin-wall sleeve inside after the pressure of hydraulic oil is released recovers to the original shape when the pressure is not applied, and at the moment, a small gap is formed between the inner hole of the elastic thin-wall sleeve and the outer diameter of the workpiece, so that the workpiece is convenient to dismount.
Claims (8)
1. The utility model provides a tight type anchor clamps rise in large-scale hydraulic pressure which characterized in that: the novel clamp comprises a clamp base (2), wherein a clamp body (18) is fixedly mounted at the top of the clamp base (2), an elastic thin-wall sleeve (12) is mounted on a top inner step of the clamp body (18) in a supporting mode, an annular oil duct (11) which is annularly arranged is processed in the middle of the top inner step and is in contact with the elastic thin-wall sleeve (12), the annular oil duct (11) is communicated with a vertical oil duct (7) processed on the clamp body (18), the bottom end of the vertical oil duct (7) is communicated with a piston cavity (5) through a transverse oil duct (4), a piston (8) is mounted inside the piston cavity (5) through sliding fit, and the top of the piston (8) is matched with a power device which is used for driving the piston to slide along the piston cavity (5).
2. The large hydraulic internal tensioning clamp according to claim 1, wherein: a plurality of bolt mounting grooves (1) are uniformly formed in the outer edge of the bottom plate of the clamp base (2).
3. The large hydraulic internal tensioning clamp according to claim 1, wherein: the clamp body (18) is fixedly connected with the clamp base (2) through a plurality of uniformly distributed long bolts (6).
4. The large hydraulic internal tensioning clamp according to claim 1, wherein: the elastic thin-wall sleeve (12) is in interference fit with the inner step at the top of the fixture body, and a first sealing ring (15) and a second sealing ring (14) are installed at the upper end and the lower end of the annular oil duct (11) in a matched mode.
5. The large hydraulic internal tensioning clamp according to claim 1, wherein: the elastic thin-wall sleeve (12) is in clearance fit with a workpiece (13) to be clamped in a normal state; the elastic thin-wall sleeve (12) can elastically deform under the action of hydraulic oil and clamp a workpiece (13) to be clamped in the elastic thin-wall sleeve.
6. The large hydraulic internal tensioning clamp according to claim 1, wherein: and a plugging column (19) is mounted at the top of the vertical oil duct (7).
7. The large hydraulic internal tensioning clamp according to claim 1, wherein: the power device comprises a threaded hole (9) machined in the top of the piston cavity (5), a threaded column (10) is matched with the inside of the threaded hole (9) in a threaded transmission mode, the bottom end face of the threaded column (10) is in contact fit with the top end of the piston (8), and the threaded column is pushed to slide along the piston cavity (5).
8. The large hydraulic internal tensioning clamp according to claim 1, wherein: and a sealing gasket (3) is arranged at the bottom of the transverse oil duct (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922065574.8U CN210937211U (en) | 2019-11-26 | 2019-11-26 | Large-scale hydraulic internal tensioning type clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922065574.8U CN210937211U (en) | 2019-11-26 | 2019-11-26 | Large-scale hydraulic internal tensioning type clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210937211U true CN210937211U (en) | 2020-07-07 |
Family
ID=71371156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922065574.8U Expired - Fee Related CN210937211U (en) | 2019-11-26 | 2019-11-26 | Large-scale hydraulic internal tensioning type clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210937211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117066607A (en) * | 2023-08-22 | 2023-11-17 | 安徽马仪科技股份有限公司 | A pressure reducer housing processing device |
-
2019
- 2019-11-26 CN CN201922065574.8U patent/CN210937211U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117066607A (en) * | 2023-08-22 | 2023-11-17 | 安徽马仪科技股份有限公司 | A pressure reducer housing processing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200707 Termination date: 20211126 |